Monitoring Amazon ECS

You can monitor your Amazon ECS resources using Amazon CloudWatch, which collects
and processes raw data
from Amazon ECS into readable, near real-time metrics. These statistics are recorded
for a period
of two weeks, so that you can access historical information and gain a better perspective
on
how your clusters or services are performing. Amazon ECS metric data is automatically
sent to
CloudWatch in 1-minute periods. For more information about CloudWatch, see the Amazon CloudWatch User Guide.

Monitoring is an important part of maintaining the reliability, availability, and
performance of Amazon ECS and your AWS solutions. You should collect monitoring data
from all
of the parts of your AWS solution so that you can more easily debug a multi-point
failure
if one occurs. Before you start monitoring Amazon ECS; however, you should create
a monitoring
plan that includes answers to the following questions:

What are your monitoring goals?

What resources will you monitor?

How often will you monitor these resources?

What monitoring tools will you use?

Who will perform the monitoring tasks?

Who should be notified when something goes wrong?

The metrics made available depend on the launch type of the tasks and
services in your clusters. If you are using the Fargate launch type for your
services, then CPU and memory utilization metrics are provided to assist in the monitoring
of your services. For the Amazon EC2 launch type, you own and need to monitor the
EC2 instances
that make your underlying infrastructure. Additional CPU and memory reservation and
utilization metrics are made available at the cluster, service, and task level.

The next step is to establish a baseline for normal Amazon ECS performance in your
environment,
by measuring performance at various times and under different load conditions. As
you
monitor Amazon ECS, store historical monitoring data so that you can compare it with
current
performance data, identify normal performance patterns and performance anomalies,
and devise
methods to address issues.

To establish a baseline you should, at a minimum, monitor the following
items:

The CPU and memory and reservation utilization metrics for your Amazon ECS
clusters